Calcite and Ludlamite Physical Properties

Calcite

Ludlamite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.67-2.733.1-3.2

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect on [10 1 1] three directions with angle of 74° 55

Vitreous, pearly on cleavage

1.7 Mohs Hardness

33-4

2 10

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Calcite and Ludlamite Chemical Formula

While comparing Calcite and Ludlamite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Calcite and Ludlamite chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Calcite and Ludlamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.